[PATCH v6 1/5] binman: x509_cert: document Entry_x509_cert properties

[Sergio Prado <sergio.prado@e-labworks.com>]

The Entry_x509_cert class only listed 'content' in its
'Properties / Entry arguments' section, even though 'keyfile',
'cert-ca', 'cert-revision-int' and 'sw-rev' are also read from the
entry node and passed through to openssl.

Expand the docstring so the binman documentation generated from it
matches the actual behavior of the entry.

No functional change.

Signed-off-by: Sergio Prado <sergio.prado@e-labworks.com>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
 tools/binman/etype/x509_cert.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/binman/etype/x509_cert.py b/tools/binman/etype/x509_cert.py
index b6e8b0b4fb09..efa85f9553e7 100644
--- a/tools/binman/etype/x509_cert.py
+++ b/tools/binman/etype/x509_cert.py
@@ -18,7 +18,15 @@ class Entry_x509_cert(Entry_collection):
     """An entry which contains an X509 certificate
 
     Properties / Entry arguments:
-        - content: List of phandles to entries to sign
+        - content: List of phandles to entries to sign.
+        - keyfile: Filename of the PEM key file used to sign the binary.
+        - cert-ca: Common Name (CN) embedded in the certificate. Used when
+            generating a generic x509 certificate.
+        - cert-revision-int: Integer certificate revision number. Used when
+            generating a generic x509 certificate. Defaults to 0.
+        - sw-rev: Software revision number embedded in the certificate by
+            the sysfw/rom variants used by the TI K3 secure boot subclasses.
+            Defaults to 1.
 
     Output files:
         - input.<unique_name> - input file passed to openssl
-- 
2.34.1